System and method for improved film cooling

A system (80) for producing at least one trench (44) to improve film cooling in a sample (92) is provided. The system (80) includes at least one laser source (82) outputting at least one pulsed laser beam (84). The pulsed laser beam (84) includes a pulse duration including a range less than about 50...

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Bibliographische Detailangaben
Hauptverfasser:	Bunker, Ronald Scott, Zhang, Wenwu, Jones, Marshall Gordon, Lee, Ching-Pang, Scheidt, Wilbur Douglas, Azer, Magdi Naim
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A system (80) for producing at least one trench (44) to improve film cooling in a sample (92) is provided. The system (80) includes at least one laser source (82) outputting at least one pulsed laser beam (84). The pulsed laser beam (84) includes a pulse duration including a range less than about 50 µs, an energy per pulse having a range less than about 0.1 Joule, and a repetition rate with a range greater than about 1000 Hz. The system (80) also includes a control subsystem (98) coupled to the laser source (82), the control subsystem (98) configured to synchronize a position of the sample (92) with the pulse duration and energy level in order to selectively remove at least one of a thermal barrier coating, a bondcoat and a substrate metal in the sample (92) to form the at least one trench (44).